Besides Death, the Horsemen of the Apocralypse are
War,
Famine and
Pestilence (and, originally, Kaos). Like Death (and many other anthropomorphic personifications) they have developed beyond their roles. They make a brief appearance in
The Light Fantastic and subsequently have more significant roles in
Sourcery and
Thief of Time. War and his children also make an appearance in
Interesting Times.